what's difference between 9mm 115 gr and 9mm 125 gr.?

[loonie]

I saw some ad says luger 9mm 115gr while other states luger 9mm 125gr? what's the "gr" supposed to mean?

 

[Hypnogator]

The weight in grains of the bullet. 1 grain = 1/7000th of a pound.

9mm Parabellum (Luger) ammo is commonly loaded with 115, 124 (or 125), and 147 grain bullets. Each have their advantages and disadvantages.

 

[peter3]

Grain. It is a unit of measurement for weight. The higher the # the more it weighs and usually the slower it moves in a given round. IE 125gr 9mm will usaully be travelling slower than a 115gr 9mm

 

[Preacherman]

One is 8.7% heavier than the other.

 

[distra]

Can't resist this one....125gr-115gr=10grs Kidding aside, 1grain=0.06479891 gram, don't mix grains(gr) and grams(g), ugly things can happen .

 

[mete]

New member and obviously new to guns !Welcome. We define bullets by weight and diameter. In your case the 9mm [.355"] is the diameter and the weight is measured in grains [ 470 grains = 1 ounce ] .Bullet weights available in 9mm are from about 90 to 147 grains . Common weights are 115,125 and 147 gr. Bullet shape can also be different , FMJ [a lead bullet completely covered with copper ] JHP [a copper jacketed bullet with a hollow point ] and a LRN [an all lead bullet with a round nose ]. Choice of bullet depends on the use .

 

[loonie]

thanks a lot to the buddies above. I learned a lot from you guys.

 

[Vitamin G]

Difference between 115gr and 125gr...

10gr

(Sorry, every thread has "that guy")

 

[Tsonda]

As others have pointed out 10 grains. There are 7,000 grains in a pound. That can sometimes be helpful to know.

Regards,

James

 

[Steelcore]

The 124 gr load is the old German Luger/P38 load.the 115 is the NATO load.

 

[GTSteve03]

The 124 gr load is the old German Luger/P38 load.the 115 is the NATO load.

Really?

I always thought the 124gr +P loading was about equal to the NATO specs, but I could be wrong.

Is there anywhere that lists the official NATO specs on 9mm ammo?

 

[mete]

The 9mm Parabellum [ Luger ] was introduced for the German army in 1908 [ P-08 Parabellum]. Originally 124 gr flat nose FMJ [truncated cone]. This was changed to a FMJ-RN since the flat nose didn't work in the drum magazine well.Velocity was about 1050 fps. Bullets were made as light as 90 grains in Germany ,and even a double projectile round was made .

 

[Kymasabe]

bullet weights matter...

Here's an interesting side-bar about bullet weights...some bullets will shoot higher or lower in your gun than others. For example: I had a Taurus PT-111 9mm that always shot low with 115gr rounds. If I moved up to 124, the point of impact would come up a little and if I moved up again to 147, the point of impact was usually right where I was aiming. The reason? The heavier bullet moves slower, therefore it gets to "ride the recoil" for a fraction of a second longer and ends up hitting a little higher.

So, keep that in mind when buying practice ammo - vs- carry or defense ammo. You'll want to find a bullet weight that you and your gun like, then stick with it. Don't practice with cheap 115gr, then load up with 147gr self defense rounds. You'll be shooting all over the place if you do.

 

[JohnKSa]

I always thought the 124gr +P loading was about equal to the NATO specs, but I could be wrong.

The 9mm NATO load uses a 124gr FMJ bullet. I don't know the rest of the specifications.

 

[MachIVshooter]

[ 470 grains = 1 ounce ]

437.5

 

[BluesBear]

437.5 grains to one ounce
7000 grains to one pound

 

[cbsbyte]

I am pretty sure the 125 gr bullet was designed for the .357 Sig. The 124 Gr is more commonly used in the 9x19mm. Of course you can use a 125 Gr in a 9mm.

 

[BluesBear]

If you look at ammo catalogues over the past 50 years you'll find the 9mm advertised loaded with 98, 100, 102, 112, 114, 115, 116, 122, 124, 125 and 147 gr bullets. Probably more. That's just what I can recall off the top of my head.

 

[1911user]

penetration and muzzle velocity for standard pressure loads?